Antenna



FIG. 1 is a perspective view of an antenna showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and

FIG. 8 is the second perspective view showing the antenna; and,

FIG. 9 is a perspective view of connection of the antenna for reference.

The broken lines depict parts of the antenna that form no part of the claimed design. 

CLAIM The ornamental design for an antenna, as shown and described. 